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稻田土壤固碳关键过程的生物地球化学机制及其碳中和对策

祝贞科 肖谋良 魏亮 王双 丁济娜 陈剑平 葛体达

祝贞科, 肖谋良, 魏亮, 王双, 丁济娜, 陈剑平, 葛体达. 稻田土壤固碳关键过程的生物地球化学机制及其碳中和对策[J]. 中国生态农业学报 (中英文), 2022, 30(4): 592−602 doi: 10.12357/cjea.20210748
引用本文: 祝贞科, 肖谋良, 魏亮, 王双, 丁济娜, 陈剑平, 葛体达. 稻田土壤固碳关键过程的生物地球化学机制及其碳中和对策[J]. 中国生态农业学报 (中英文), 2022, 30(4): 592−602 doi: 10.12357/cjea.20210748
ZHU Z K, XIAO M L, WEI L, WANG S, DING J N, CHEN J P, GE T D. Key biogeochemical processes of carbon sequestration in paddy soil and its countermeasures for carbon neutrality[J]. Chinese Journal of Eco-Agriculture, 2022, 30(4): 592−602 doi: 10.12357/cjea.20210748
Citation: ZHU Z K, XIAO M L, WEI L, WANG S, DING J N, CHEN J P, GE T D. Key biogeochemical processes of carbon sequestration in paddy soil and its countermeasures for carbon neutrality[J]. Chinese Journal of Eco-Agriculture, 2022, 30(4): 592−602 doi: 10.12357/cjea.20210748

稻田土壤固碳关键过程的生物地球化学机制及其碳中和对策

doi: 10.12357/cjea.20210748
基金项目: 国家自然科学基金项目(42141006, 42177334, 42107341)和宁波大学王宽诚教育基金资助
详细信息
    作者简介:

    祝贞科, 主要研究方向为土壤生态学。E-mail: zhuzhenke@nbu.edu.cn

    通讯作者:

    葛体达, 主要研究方向为微生物生态与土壤健康。E-mail: getida@nbu.edu.cn

  • 中图分类号: S158

Key biogeochemical processes of carbon sequestration in paddy soil and its countermeasures for carbon neutrality

Funds: This study was supported by the National Natural Science Foundation of China (42141006, 42177334, 42107341) and K. C. Wong Magna Fund in Ningbo University.
More Information
  • 摘要: 稻田生态系统具有碳源和碳汇双重功能, 调控稻田土壤固碳减排, 对于保障我国粮食安全以及实现“碳中和”目标具有重要意义。近年来, 国内外学者在稻田土壤有机碳周转过程与机制方面开展了大量研究, 本文从土壤有机碳的来源、转化、稳定与技术调控等方面, 总结和分析稻田土壤固碳过程和机制, 并提出应对“碳中和”的策略。稻田土壤有机碳主要来源于水稻秸秆、根系、根际沉积碳、微生物同化碳以及有机肥等。外源有机碳输入土壤后, 其分解矿化过程首先受控于有机碳溶出过程, 而微生物矿化溶出的有机碳过程与土壤水分条件、养分含量及其计量比、微生物活性等因素密切相关。除了矿化释放的有机碳, 其余部分主要是通过微生物的同化代谢, 形成活体微生物及其残留物, 最终以团聚体保护、矿物结合态保护、微生物残体保护等形式固持于土壤中。我国水稻土具有显著的固碳效应, 近40年来的实测数据表明, 在水肥管理和秸秆还田等多举措实施下, 我国亚热带水稻土耕作层有机碳含量增加了约60%。采用增碳减排措施, 优化稻作系统耕作方式和田间管理模式, 建立碳减排生态补偿机制, 推动稻作系统纳入“碳交易”市场, 对实现“碳中和”起到了积极作用。所以, 在今后的研究中, 需要深入阐明稻田固碳功能形成机制, 提升核算与预测稻田碳中和能力, 加快稻田碳中和技术研发, 为提前实现“碳中和”战略目标提供科技支撑。
  • 图  1  稻田土壤有机碳转化与稳定机制

    Figure  1.  Transformation and stabilization mechanism of soil organic carbon in paddy field

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出版历程
  • 收稿日期:  2021-11-03
  • 录用日期:  2021-12-07
  • 网络出版日期:  2021-12-31
  • 刊出日期:  2022-04-11

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